[Qt-interest] Hiding QTreeWidget heirarchy

[Sean Harmer]

Hi,

On Tuesday 02 Jun 2009 12:59:45 Santhosh Y wrote:
> Santhosh Y wrote:
> > Hi,
> >
> > By default QTreeWidget shows a QTreeWidgetItem children with hierarchy
> > levels. Please see the attached image.
> > Can I hide this.
> >
> > Any help is appreciated.
The branch lines are drawn by the current style. Check out the screen shots in 
the documentation for QTreeView (from which QTreeWidget is derived). So one 
option is to use a style that simply does nothing when asked to draw this type 
of primitive. That is you could derive a new style from your currently used 
widget style and override the drawing of that one primitive or simply find 
another widget style that already does this. The call is made on line 1739 of 
qtreeview.cpp (in the Qt 4.5.1 source).

Another option is to derive a new class from QTreeWidget (and hence QtreeView) 
and override the drawBranches() function where the above call is made so that 
is doesn't ask for that primitive to be drawn ever no matter what widget style 
the user has selected to use.

Which option you go for depends on how much you as the app developer think you 
know better than your users as to what they want to see. I would be tempted to 
do nothing and just let the user choose a style that draws the branch lines as 
they prefer.

HTH,

Sean